Harry Potter comes back to life in the story primarily because of the interplay of his status as a Horcrux and the choices surrounding the Deathly Hallows, along with the lingering protection from his mother’s sacrifice and the symbolic power of the Deathly Hallows themselves. Direct answer

• In the Deathly Hallows, Voldemort’s Killing Curse on Harry destroys the part of Voldemort’s soul that was attached to Harry, but because Harry himself is an unintentional Horcrux, the curse doesn’t kill him outright in the same way it would a normal person. This creates a unique life-link between Harry and Voldemort, which is central to why Harry can survive the act and later return to the living world.

• Harry’s choice to sacrifice himself—stepping into the forest to allow Voldemort to kill him—aligns with his role as the “Master of Death,” a title tied to possessing all three Deathly Hallows. This is presented as a conscious decision that enables him to meet death on his own terms and subsequently return. The Resurrection Stone and the broader “Master of Death” concept are often cited as the metaphysical framework behind his return.

• After being struck by the Killing Curse, Harry experiences a liminal encounter (often described as a conversation with Dumbledore in a sort of King’s Cross-like space). Rather than remaining dead, he is allowed to return to the living world, aided by the Horcrux influence and the protection conferred by his mother’s magical sacrifice. This combination culminates in his reappearance to his friends at Hogwarts and the final confrontation with Voldemort.

If you’d like, I can summarize the in-universe explanations in a concise timeline or compare how different sources interpret Harry’s survival (books vs films) with specific scene references.